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swiftshader
Commit 5989fab7 by Nicolas Capens
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Implement support for separate minification/magnification filters.

Bug 22373253 Change-Id: Iaa30a341e5eaa58c2ef531fce503631828c5ee9d Reviewed-on: https://swiftshader-review.googlesource.com/4757Reviewed-by: 's avatarAlexis Hétu <sugoi@google.com> Reviewed-by: 's avatarNicolas Capens <capn@google.com> Tested-by: 's avatarNicolas Capens <capn@google.com>
parent 2783c42f
Showing with 44 additions and 41 deletions
src/OpenGL/libGL/utilities.cpp
......@@ -620,27 +620,19 @@ namespace es2sw
return sw::FILTER_ANISOTROPIC;
}
sw::FilterType magFilterType = sw::FILTER_POINT;
switch(magFilter)
{
case GL_NEAREST: magFilterType = sw::FILTER_POINT; break;
case GL_LINEAR: magFilterType = sw::FILTER_LINEAR; break;
default: UNREACHABLE(magFilter);
}
switch(minFilter)
{
case GL_NEAREST:
case GL_NEAREST_MIPMAP_NEAREST:
case GL_NEAREST_MIPMAP_LINEAR:
return (magFilterType == sw::FILTER_POINT) ? sw::FILTER_POINT : sw::FILTER_MIN_POINT_MAG_LINEAR;
return (magFilter == GL_NEAREST) ? sw::FILTER_POINT : sw::FILTER_MIN_POINT_MAG_LINEAR;
case GL_LINEAR:
case GL_LINEAR_MIPMAP_NEAREST:
case GL_LINEAR_MIPMAP_LINEAR:
return (magFilterType == sw::FILTER_POINT) ? sw::FILTER_MIN_LINEAR_MAG_POINT : sw::FILTER_LINEAR;
return (magFilter == GL_NEAREST) ? sw::FILTER_MIN_LINEAR_MAG_POINT : sw::FILTER_LINEAR;
default:
UNREACHABLE(minFilter);
return (magFilterType == sw::FILTER_POINT) ? sw::FILTER_POINT : sw::FILTER_MIN_POINT_MAG_LINEAR;
return sw::FILTER_LINEAR;
}
}
......@@ -698,7 +690,7 @@ namespace es2sw
case GL_RGB8_EXT: return sw::FORMAT_X8R8G8B8;
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_STENCIL_INDEX8:
case GL_STENCIL_INDEX8:
case GL_DEPTH24_STENCIL8_EXT: return sw::FORMAT_D24S8;
default: UNREACHABLE(format); return sw::FORMAT_A8R8G8B8;
}
......
src/Shader/SamplerCore.cpp
......@@ -556,26 +556,37 @@ namespace sw
mask = As<Int4>(CmpLT(Abs(coordinates - Float4(0.5f)), Float4(0.5f)));
}
Short4 SamplerCore::offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count)
Short4 SamplerCore::offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count, Float &lod)
{
Short4 offset = *Pointer<Short4>(mipmap + halfOffset);
if(state.textureFilter == FILTER_MIN_LINEAR_MAG_POINT)
{
offset &= Short4(CmpNLE(Float4(lod), Float4(0.0f)));
}
else if(state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
{
offset &= Short4(CmpLE(Float4(lod), Float4(0.0f)));
}
if(wrap)
{
switch(count)
{
case -1: return uvw - *Pointer<Short4>(mipmap + halfOffset);
case -1: return uvw - offset;
case 0: return uvw;
case +1: return uvw + *Pointer<Short4>(mipmap + halfOffset);
case 2: return uvw + *Pointer<Short4>(mipmap + halfOffset) + *Pointer<Short4>(mipmap + halfOffset);
case +1: return uvw + offset;
case 2: return uvw + offset + offset;
}
}
else // Clamp or mirror
{
switch(count)
{
case -1: return SubSat(As<UShort4>(uvw), *Pointer<UShort4>(mipmap + halfOffset));
case -1: return SubSat(As<UShort4>(uvw), As<UShort4>(offset));
case 0: return uvw;
case +1: return AddSat(As<UShort4>(uvw), *Pointer<UShort4>(mipmap + halfOffset));
case 2: return AddSat(AddSat(As<UShort4>(uvw), *Pointer<UShort4>(mipmap + halfOffset)), *Pointer<UShort4>(mipmap + halfOffset));
case +1: return AddSat(As<UShort4>(uvw), As<UShort4>(offset));
case 2: return AddSat(AddSat(As<UShort4>(uvw), As<UShort4>(offset)), As<UShort4>(offset));
}
}
......@@ -760,7 +771,7 @@ namespace sw
Short4 vvvv = address(v, state.addressingModeV, mipmap);
Short4 wwww = address(w, state.addressingModeW, mipmap);
if(state.textureFilter == FILTER_POINT || state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
if(state.textureFilter == FILTER_POINT)
{
sampleTexel(c, uuuu, vvvv, wwww, mipmap, buffer);
}
......@@ -771,10 +782,10 @@ namespace sw
Vector4s c2;
Vector4s c3;
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 0 : -1);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 0 : -1);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 2 : +1);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 2 : +1);
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 0 : -1, lod);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 0 : -1, lod);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 2 : +1, lod);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 2 : +1, lod);
sampleTexel(c0, uuuu0, vvvv0, wwww, mipmap, buffer);
sampleTexel(c1, uuuu1, vvvv0, wwww, mipmap, buffer);
......@@ -965,7 +976,7 @@ namespace sw
Short4 vvvv = address(v_, state.addressingModeV, mipmap);
Short4 wwww = address(w_, state.addressingModeW, mipmap);
if(state.textureFilter <= FILTER_POINT || state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
if(state.textureFilter == FILTER_POINT)
{
sampleTexel(c_, uuuu, vvvv, wwww, mipmap, buffer);
}
......@@ -983,9 +994,9 @@ namespace sw
{
for(int k = 0; k < 2; k++)
{
u[i][j][k] = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, i * 2 - 1);
v[i][j][k] = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, j * 2 - 1);
s[i][j][k] = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, k * 2 - 1);
u[i][j][k] = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, i * 2 - 1, lod);
v[i][j][k] = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, j * 2 - 1, lod);
s[i][j][k] = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, k * 2 - 1, lod);
}
}
}
......@@ -1237,7 +1248,7 @@ namespace sw
Short4 vvvv = address(v, state.addressingModeV, mipmap);
Short4 wwww = address(w, state.addressingModeW, mipmap);
if(state.textureFilter == FILTER_POINT || state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
if(state.textureFilter == FILTER_POINT)
{
sampleTexel(c, uuuu, vvvv, wwww, w, mipmap, buffer);
}
......@@ -1248,10 +1259,10 @@ namespace sw
Vector4f c2;
Vector4f c3;
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 0 : -1);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 0 : -1);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 2 : +1);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 2 : +1);
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 0 : -1, lod);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 0 : -1, lod);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, gather ? 2 : +1, lod);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, gather ? 2 : +1, lod);
sampleTexel(c0, uuuu0, vvvv0, wwww, w, mipmap, buffer);
sampleTexel(c1, uuuu1, vvvv0, wwww, w, mipmap, buffer);
......@@ -1303,7 +1314,7 @@ namespace sw
Short4 vvvv = address(v, state.addressingModeV, mipmap);
Short4 wwww = address(w, state.addressingModeW, mipmap);
if(state.textureFilter <= FILTER_POINT || state.textureFilter == FILTER_MIN_POINT_MAG_LINEAR)
if(state.textureFilter == FILTER_POINT)
{
sampleTexel(c, uuuu, vvvv, wwww, w, mipmap, buffer);
}
......@@ -1318,12 +1329,12 @@ namespace sw
Vector4f c6;
Vector4f c7;
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, -1);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, -1);
Short4 wwww0 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, -1);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, +1);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, +1);
Short4 wwww1 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, +1);
Short4 uuuu0 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, -1, lod);
Short4 vvvv0 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, -1, lod);
Short4 wwww0 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, -1, lod);
Short4 uuuu1 = offsetSample(uuuu, mipmap, OFFSET(Mipmap,uHalf), state.addressingModeU == ADDRESSING_WRAP, +1, lod);
Short4 vvvv1 = offsetSample(vvvv, mipmap, OFFSET(Mipmap,vHalf), state.addressingModeV == ADDRESSING_WRAP, +1, lod);
Short4 wwww1 = offsetSample(wwww, mipmap, OFFSET(Mipmap,wHalf), state.addressingModeW == ADDRESSING_WRAP, +1, lod);
sampleTexel(c0, uuuu0, vvvv0, wwww0, w, mipmap, buffer);
sampleTexel(c1, uuuu1, vvvv0, wwww0, w, mipmap, buffer);
......
src/Shader/SamplerCore.hpp
......@@ -28,7 +28,7 @@ namespace sw
private:
void border(Short4 &mask, Float4 &coordinates);
void border(Int4 &mask, Float4 &coordinates);
Short4 offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count);
Short4 offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count, Float &lod);
void sampleFilter(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], bool lodProvided);
void sampleAniso(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], bool secondLOD, bool lodProvided);
void sampleQuad(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Int face[4], bool secondLOD);
......
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